The mesoporous nanostructured film of titanium dioxide (TiO2) nanoparticles (TNPs) with anatase crystalline polymorph has been used as unique materials over the last two decades as an efficient photoelectrode material for dyesensitized solar cells (DSSCs) [13]. However, the structural disorder or trap states of TNP led to the elongation of electron colleting path and ultrafast scattering of free electrons,which in turn increases the probability of recombination at the interface between TNP and electrolyte or dye to reduce electron collection efficiency [4].... I-V特性測試儀器（太陽能電池）